Regulator system



Aprll l2 1927. 1,624,387

c. A. BODDIE REGULATOR SYSTEM Filed Feb. 18, 1924 '/4 AAAA WITNESSES: S INVENTOR BY v 7 ATTORNEY Patented Apr. 12, 1927.

PATENT oFFIcE.

CLARENCE A, BODDIE, OI WILKINSBUBG, PENNSYLVANIA, ASSIGNOR TO WESTING- HOUSE ELECTRIC & MANUFACTURING COMPANY, A

VANIA.

CORPORATION OF PENNSYL- aneona'ro'a sYsrmr.

Application filed February 18, 1824. Serlal'No. 698,337.

My invention relates to electrical regulators' and it has for one of its objects to provide a sim 1e but exceptionally efi'ective regulator of ti tion is effected by adjustment of the field excitation of a dynamo-electric machine.

A further object of my invention is to provide such a regulator with means whereby it will besensitive to sudden changes in the regulated quantity, such means modifying the normal operation of the regulator to hasten the regulating action thereof.

It has been found, in regulators of the vibrating, type, such, for example, as the Tirrill type voltage regulator, that it is desirable in certain installations to have the load current, in case of sudden load, affect the regulator directly without waiting for the line voltage to drop, that is, to have the load current operate the main contact members prior to the occurrence of the voltage drop that an increase of load would cause.

My invention provides means whereby the regulator is affected in proportion to sudden load changes, but does not introduce any error in regulation since, when operating under normal conditions, the load changes are gradual, and the loadresponsive means is unafl'ected by gradual or slight load changes.

The single figure of the accompanying" drawing is a diagrammatic view of a regulating system employing my invention.

A system in connection with which the present invention may be conveniently em-. ployed comprises a main generator having an'armature 1, which is connected to a suitable distributing circuit 2, 3, 4, and a fieldmagnet winding 5 that is Supplied with exciting current from an exciter generator having an armature 6 and a field-magnet winding 7. The exciter generator is preferably shunt-excited, though it may be supplied with current from any other suitable source, and in series with said field-magnet winding is a resistor 8, which is adapted to be shunted by means of cooperating stationary and movable contactterminals 9 and 10 of a relay 11 constituting a part of my regulator.

The regulator is provided wlth a mam conta'ct terminal 12 that is resiliently mounted upon the end of a late spring 13 and with a cooperating mova 1e contact tere kind in which the regula minal 14 that is mounted near one end of a bell-crank lever 15. The lever 15 is pivotally mounted upon the lower end of a vertical arm of another bell crank lever 16 and is actuated by electromagnet 17. The bell-crank lever 16 is actuated by an electromagnet 18. v

The electromagnet 17 coin-prises a coil -19 and. a movable core 20 that is attached to one end of the lever 15. The coil 19 is connected to the circuit 2, 3, 4, through a transformer 22 and is energized from the secondary winding thereof. To the other end of the lever 15 is attached an adjustable counterweight 21, while to the lower end of the ccre 20 is attached a retarding device, such as a dash-pot 23. The energization of the coil 19 tends to move the core 20 upwardly against the action of the dash-pot 23. The electromagnet 18 comprises a coil 24 and a movable core 25, that is attached to the outer end of the lever 16. The downward movement of the core 25 is retarded by means of a dash-pot 26. The retardation effected by the dash-pot 26 is preferably less than that afforded by the dashpot 23, in order that the initial or approximate regulation may be effected by the coil 24 and the fine regulation by the coil 19. In circuit with the coil 24 there is provided a resistor 27, and a circuit in shunt to this resistor traverses contact terminals 28 and 29 of a relay 30.

The relays 11 and 30 are provided with parallel-connected electromagnets 31 and 32,

terminals from any suitable source of energy,

such as direct-current conductors 33 and 34. An electromagnet 35 comprises a coil 36 and a movable core 37. The coil 36 is energized from a current transformer 38, which is energized from one of the line conductors 4, to cause the core 37 to be actuated upwardly against the compression of a spring 39. To the lower end of the core 37 is connected a retarding device in the form of a dash-pot .40. The dash-pot 40 is connected by means of a pipe 41, which contains liquid, to the dash-pot 23.

The mode of operation of the device is substantially as follows:

Whenever the main contact terminals 12 and 14 are out of engagement, the relay magnets 31 and 32 are unenergized, and the shunt circuits for the resistors 8 and27 are interrupted, thus diminishing the voltage of the exciter generator and, consequently, the voltage of the dynamo-electric machine 1. The energization of the electromagnets 17 and 18 are therefore diminished, permitting the contact terminal 12 to move toward the contact terminal 14. Upon the enga ementof the terminals 12 and 14, the re a) electromagnets 31 and 32 become energized, thus shunting the field resistor 8, thereby raising the voltage of the exciter generator, and, consequently, that of the main generator. By reason of shunting the resistor 27, in circuit with the electromagnet winding 24, the energization of this Winding is increased, thereby causing a separation of the contact members 12 and 14 and giving a vibratory action to the regulator.

Under normal load conditions the electromagnets 17 and 18 operate to control the voltage of the system. Should, however, asudden increase in load occur, the electro magnet 35 would become suddenly energized to a degree that would cause it to move upwardly against the action of the spring 39. This operation of the electromagnet 35, acting through the dash pot 40 and the interconnected dash pot 23, would cause the core of, theelectromagnets 17 to move downdownwardly and thus close the contacts 12 and l tearlier than they would normally be closed, dueto the drop in voltage upon the line. A sufiicient by-pass past the piston in the dash pot 40 is provided, so that slight changes in the load upon the line will not be communicated by means of the hydraulic connection to the dash 0t 23. Upon asudden change of a consi erable degree in the load upon the line, a temporary force will, however, be brought to bear upon the liquid in the hydraulic connection.

While the regulator has been shown as employed for regulating in accordance with variations of voltage or current, it will be readily understood that it may be adapted to meet other requirements, and to regulate in accordance with the variations of any other electrical condition of a circuit or system without departing from the spirit of the invention.

I claim as my invention:

1. In a regulator system, the combination with an electrical circuit and means respom sive to a quantity of said circuit, of a regulator for said circuit comprising cooperatlng contact members, electroresponsive means for causing said contact members to engage and disengage and the circuit of which is controlled thereby, a second electroresponsive means for adjusting the periods of engagement of said contact members in accordance with the variations of an electrical condition of said circuit, and a third electroresponsive means responsive to sudden changes only in the electrical condition of said circuit to close the circuit of said cooperating contact members.

2. In a regulator system, the combination with an electrical circuit and means responsive to a quantity of said circuit, of a regulator for said circuit comprising cooperating contact members, electroresponsive means for causing said contact members to engage and disengage and the circuit of which is controlled thereby, a second QlGCtlOIBSPOIb' sive means for ad usting the periods of en-,

gagement of said contact members in accordance with the variations of an electrical condition of said circuit, and a third electroresponsive means responsive to sudden changes in the electrical condition of said circuit, said third-named electroresponsive means being yieldingly interconnected to temporarily actuate said first two named electroresponsive means.

3. In a regulator system, the combination with an electrical circuit and means responsive to a quantity of said circuit, of a re ulator for said circuit comprising cooperating contact members, electroresponsive means for causing said contact members to engage and disengage and the circuit of which is controlled thereb a second electroresponsive means for a justing the periods of engagement of said contact members in accordance with the variations of an electrical condition of said circuit, and a third electroresponsive means responsive to sudden changes only in the electrical condition of said circuit, said several electroresponsive means being yieldingly interconnected.

4. The combination with an electrical circuit, of a regulator comprisin cooperating contact members, two actuatlng windings therefor, each of which is continuously energized in proportion to variations of the same electrical condition of said circuit, and the circuit of one of which is also controlled by the said contact members, and additional means for actuating said contact members, said last-named means being responsive to sudden variations only of an electrical condition of said circuit.

5. In a regulating system, the combination with an electrical clrcuit, of a regulator, two actuating electromagnets therefor, each of which is continuously energized in proportion to variations of an electrical condition of said circuit, and means actuated in accordance with sudden variations only of said electrical condition for temporarily interrupting the operation of said actuating electromagnets.

6. In a regulator system, the combination with an electric circuit, of a regulator having an electromagnet energized in accordance with an electrical condition of said circuit, and means actuated in accordance with sudden variations of an electrical condition of said circuit for temporarily forcing the action of said regulator in anticipation of a required correction in the regulated quantity.

' 7. In a regulator system, the combination with an electric circuit, of a re lator having an electromagnet ener ize in accordance with an electrical con ition of said cir-' cuit, and an auxiliary magnet energized in accordance with an electrical condition of said circuit, said auxiliary magnet being yieldingly connected to said regulator magnet and operable to temporarily modify the regulator action in anticipation of a sudden change in the regulated quantity.

In testimony whereof, I have hereunto subscribed my name this 4th day of Febru- CLARENCE A. BODDIE.

.ary, 1924. 

